Chromium hangs under guest login

[Kasper Dupont]

When trying to start Chromium under a guest login, it hangs at startup.

Steps to reproduce:
1. Boot
2. Login using guest login
3. Open terminal
4. Type chromium-browser

Expected result:
Chromium starts

Actual result:
"Failed to move to new PID namespace: Operation not permitted" is printed and Chromium hangs forever without opening any window.

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: chromium-browser 18.0.1025.168~r134367-0ubuntu0.11.10.1
ProcVersionSignature: Ubuntu 3.2.0-24.39-generic 3.2.16
Uname: Linux 3.2.0-24-generic i686
NonfreeKernelModules: nvidia
ApportVersion: 2.0.1-0ubuntu8
Architecture: i386
CrashDB: ubuntu
Date: Sun Jun 10 23:10:49 2012
Desktop-Session:
 DESKTOP_SESSION = gnome-classic
 XDG_CONFIG_DIRS = /etc/xdg/xdg-gnome-classic:/etc/xdg
 XDG_DATA_DIRS = /usr/share/gnome-classic:/usr/share/gnome:/usr/local/share/:/usr/share/
EcryptfsInUse: Yes
Env:
 MOZ_PLUGIN_PATH = None
 LD_LIBRARY_PATH = None
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release i386 (20110427.1)
ProcEnviron:
 LANGUAGE=en_US:en
 TERM=xterm
 PATH=(custom, user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: chromium-browser
ThirdParty: True
UpgradeStatus: Upgraded to precise on 2012-05-08 (33 days ago)
chromium-default: CHROMIUM_FLAGS=""

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.